'use strict'

var _interopRequireDefault = require('@babel/runtime/helpers/interopRequireDefault')

Object.defineProperty(exports, '__esModule', {
  value: true
})
exports.default = throttleByAnimationFrame
exports.throttleByAnimationFrameDecorator = throttleByAnimationFrameDecorator

var _toConsumableArray2 = _interopRequireDefault(require('@babel/runtime/helpers/toConsumableArray'))

var _raf = _interopRequireDefault(require('./raf'))

function throttleByAnimationFrame(fn) {
  var requestId

  var later = function later(args) {
    return function() {
      requestId = null
      fn.apply(void 0, (0, _toConsumableArray2.default)(args))
    }
  }

  var throttled = function throttled() {
    if (requestId == null) {
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key]
      }

      requestId = (0, _raf.default)(later(args))
    }
  }

  throttled.cancel = function() {
    return _raf.default.cancel(requestId)
  }

  return throttled
}

function throttleByAnimationFrameDecorator() {
  // eslint-disable-next-line func-names
  return function(target, key, descriptor) {
    var fn = descriptor.value
    var definingProperty = false
    return {
      configurable: true,
      get: function get() {
        // eslint-disable-next-line no-prototype-builtins
        if (definingProperty || this === target.prototype || this.hasOwnProperty(key)) {
          return fn
        }

        var boundFn = throttleByAnimationFrame(fn.bind(this))
        definingProperty = true
        Object.defineProperty(this, key, {
          value: boundFn,
          configurable: true,
          writable: true
        })
        definingProperty = false
        return boundFn
      }
    }
  }
}
